EP4006348A1 - Ventilateur doté d'un moteur à rotor externe et canal de refroidissement destiné au refroidissement de l'électronique du moteur et des composants d'entraînement du moteur - Google Patents

Ventilateur doté d'un moteur à rotor externe et canal de refroidissement destiné au refroidissement de l'électronique du moteur et des composants d'entraînement du moteur Download PDF

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Publication number
EP4006348A1
EP4006348A1 EP22152257.6A EP22152257A EP4006348A1 EP 4006348 A1 EP4006348 A1 EP 4006348A1 EP 22152257 A EP22152257 A EP 22152257A EP 4006348 A1 EP4006348 A1 EP 4006348A1
Authority
EP
European Patent Office
Prior art keywords
motor
cooling
fan
electronics
stator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP22152257.6A
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German (de)
English (en)
Other versions
EP4006348B1 (fr
Inventor
Christian Haag
Tobias Schmidt
Wolfgang BÜRCKERT
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ebm Papst Mulfingen GmbH and Co KG
Original Assignee
Ebm Papst Mulfingen GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by Ebm Papst Mulfingen GmbH and Co KG filed Critical Ebm Papst Mulfingen GmbH and Co KG
Publication of EP4006348A1 publication Critical patent/EP4006348A1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
    • F04D29/584—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps cooling or heating the machine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F04D25/082—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit having provision for cooling the motor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/16—Centrifugal pumps for displacing without appreciable compression
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F04D25/0613—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F04D25/0613—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
    • F04D25/064—Details of the rotor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F04D25/0613—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
    • F04D25/0646—Details of the stator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
    • F04D29/056—Bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/5806—Cooling the drive system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/5813—Cooling the control unit
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges

Definitions

  • the invention relates to a fan with an external rotor motor and a cooling duct for cooling both the motor electronics and motor drive components.
  • cooling of motor drive components for example the rotor, stator or motor bearing, is also desired.
  • the invention is therefore based on the object of providing a fan which, even at low speeds, has improved cooling of the overall arrangement of the external rotor motor with regard to its motor electronics and motor drive components with the least possible and cost-effective use of materials.
  • the noise level should be comparatively low.
  • a fan with an external rotor motor in which the external rotor motor has a rotor which rotates about an axis of rotation in a motor section and which is designed to receive a radially enclosing rotor on the outside fan wheel.
  • the external rotor motor also provides motor electronics arranged in an electronics section accommodated in an electronics housing, with the motor section and the electronics section being arranged preferably axially, alternatively radially, adjacent to one another along the axis of rotation.
  • the fan generates a pressure difference between its suction side, which is preferably assigned to the rotor, and its pressure side, which is preferably assigned to the motor electronics, via the fan wheel.
  • a continuous cooling duct runs from a pressure-side inflow opening on the electronics housing along the motor electronics and at least in sections along the rotor to a suction-side outflow opening in the motor section, so that during operation a cooling air flow through the cooling duct can only be generated passively by the pressure difference generated by the fan wheel is to cool both the electronics section and the motor section.
  • the pressure side and suction side depend on the flow direction of the fan.
  • the cooling air flow is always from the pressure side to the suction side.
  • the inflow opening described above on the electronics housing is then the outflow opening, and the outflow opening in the motor section then becomes the inflow opening.
  • the fan wheel draws in air on the suction side, creating a negative pressure on the suction side, and blows it out on the pressure side, where an overpressure is created.
  • the pressure difference creates a compensating flow through the cooling channel, which is used as a passive flow of cooling air.
  • the flow of cooling air is sucked in at the outflow opening on the suction side and conveyed through the cooling channel, with the pressure difference being generated by the fan wheel on the suction side of the fan.
  • the intake of the cooling air flow on the pressure side and the outflow of the cooling air flow on the suction side at the rotor results in a holistic cooling of both the motor electronics in the electronics section and the motor drive components in the motor section. ie the overall arrangement of the external rotor motor with its motor parts and its electronics.
  • the cooling can either increase the performance or, depending on the application, even install a smaller motor. That saves costs.
  • a "passively" generated cooling air flow through the cooling channel is defined here as the distinction from an air flow that is generated by an active cooling wheel rotating during operation and is therefore active. Active cooling wheels generate noise, especially at higher speeds. This can be prevented by purely passive cooling.
  • An axial section serves as a boundary between the electronics section and the motor section, in which the components of the motor electronics that protrude furthest in the direction of the rotor end.
  • the motor electronics are often placed axially on the motor drive components. Then there is the separation between the two components.
  • cooling ribs are formed on the electronics housing, which extend axially and radially from the inflow opening into the cooling channel and form a channel wall surface of the cooling channel.
  • the cooling fins also preferably form the inflow opening on the electronics housing. The increase in surface area achieved via the cooling ribs and the positioning directly at the inflow opening lead to favorable and effective heat dissipation via the cooling air flow through the cooling channel.
  • the fan is also preferably characterized in that the rotor has a rotor housing, preferably designed as a rotor bell, and the outflow opening is designed in the area of an axial end face of the rotor housing.
  • the outflow is therefore preferably axial, but can also be provided on the outer surface of the rotor housing or at the transition between the axial end face and the outer surface and thus have an at least partially radial outflow direction.
  • the fan wheel for this embodiment has an impeller base disk with impeller blades formed thereon, with the outflow opening being formed in the impeller base disk.
  • the cooling duct thus does not extend over the entire axial length in the motor section, but is already gliding on the impeller base disk to the outside of the rotor.
  • the external rotor motor has a stator bushing with a stator core and motor windings as well as stator cooling ribs distributed in the circumferential direction in the motor section, with the cooling duct also running along the stator cooling ribs.
  • the impeller base disk runs axially adjacent to the stator cooling ribs extending axially to the impeller base disk, so that the cooling air flow can be guided axially via the stator cooling ribs to the outflow opening in the impeller base disk.
  • the stator cooling ribs are arranged as motor components in the motor section.
  • the external rotor motor has a stator bushing with a stator core and motor windings in the motor section, as well as stator cooling ribs distributed in the circumferential direction, with the cooling air flow running directly adjacent to the stator cooling ribs and along the stator core.
  • the cooling air flow can flow freely through the motor section, taking the path of least resistance, or it can be routed along certain components in a cooling duct. Due to the possibility of forming the outflow opening on the rotor or rotor housing itself, the flow of cooling air inside the rotor can be guided directly along the components that heat up during operation.
  • a favorable exemplary embodiment of the fan is characterized in that the cooling channel is closed or essentially closed by a stationary or rotatable cover in a transition from the electronics section to the motor section.
  • Substantially closed means that a complete seal is not provided.
  • the cover can be designed in the form of a labyrinth in the sense of a labyrinth seal in order to have to accept the lowest possible leakage losses.
  • the cover Depending on which component the cover is attached to, for example the electronics housing or the rotor, it stands or rotates during operation.
  • the cover forms an outer jacket surface of the external rotor motor.
  • a further development of the fan provides that the cooling duct has several changes of direction in the course from the inflow opening to the outflow opening, so that the cooling air flow is deflected several times. As a result, the cooling can be directed along the components to be cooled and thus the cooling capacity can be increased.
  • the outflow opening on the rotor housing is axially spaced relative to the fan wheel. This promotes that a sufficient pressure difference and thus the suction effect at the outflow opening is ensured.
  • one embodiment of the fan provides that the cooling duct runs in the circumferential direction in a locally limited manner in the electronics section and the motor section. This limits the space required for cooling.
  • the design of the external rotor motor remains compact.
  • the rotor is mounted via at least one bearing, with the cooling duct being routed past the at least one bearing.
  • the bearing also generates heat during operation, which is preferably dissipated with the flow of cooling air.
  • the invention relates to an embodiment of the fan with an external rotor motor with a rotor rotating about an axis of rotation in a motor section designed to accommodate a fan wheel surrounding it radially on the outside and with motor electronics arranged in an electronics section.
  • the motor section and the electronics section are arranged axially adjacent to one another along the axis of rotation or radially relative to the axis of rotation.
  • the external rotor motor has a stator bushing with a stator core and motor windings as well as stator cooling ribs distributed in the circumferential direction.
  • the fan During normal operation, the fan generates a pressure difference ⁇ p between its suction side and its pressure side via the fan wheel, with a continuous cooling channel running inside the external rotor motor from an inflow opening on the pressure side to an outflow opening on the suction side along the stator cooling fins.
  • a flow of cooling air through the cooling channel can only be passively generated by the pressure difference ( ⁇ p) generated by the fan wheel.
  • at least one power module of the motor electronics is arranged directly adjacent to the stator bushing having the stator cooling ribs in order to heat or cool the motor section and at least the power module, but also other components of the motor electronics via the stator bushing.
  • figure 1 is a schematic example of the pressure difference ⁇ p generated by a fan 1 by the fan wheel 25 during operation and the suction-side negative pressure p- and the pressure-side, ie outflow-side, positive pressure p+.
  • the negative pressure p- is used in order to generate an intake of a cooling air flow which runs as a compensating flow counter to the main flow direction of the air flow generated by the fan wheel 25 .
  • figure 2 shows a first exemplary embodiment of a partially sectioned external rotor motor 20 of the fan 1 designed as an axial fan.
  • the overall arrangement of the external rotor motor 20 is divided axially into the electronics section 21 and the motor section 22, which is immediately axially adjacent placed the rotor 2 in a way as in figure 3 shown) responsible motor drive components are arranged, in particular the cylindrical rotor 2 with its pot-shaped rotor housing 13 (rotor bell) and the stator core 8 accommodated therein with motor windings.
  • the bearing 14 of the motor shaft can also be seen.
  • the inflow opening 71 for the cooling air flow 7 is provided on the front side of the electronics housing 12 , cooling ribs 3 extending axially and radially starting from the inflow opening and determining channel wall surfaces of the cooling channel 10 in sections.
  • the cooling duct 10 is continuous and runs in the radially outer part of the external rotor motor, is deflected radially outwards after the inflow opening 71 past the electronic components arranged on a printed circuit board 15, which determine the motor electronics 11, and again deflected radially inwards to the rotor 2.
  • the cooling duct 10 runs axially in a straight line within the rotor housing 13 directly along the stator core 8 and the bearing 14 to the axially end-side outflow opening 72.
  • the cooling duct is not specially walled in the embodiment shown, see above that the flow of cooling air is free to flow along the path of least resistance along the engine components to exhaust port 72 .
  • a cooling duct can be provided with a special guide along certain components, which is formed as a closed duct by defined boundaries, for example the inner wall surface of the rotor housing.
  • the motor section extends 22 distributed in the circumferential direction arranged stator cooling ribs 5 in the direction of the rotor 2.
  • the cooling channel 10 runs past the stator cooling ribs 5, so that the cooling air flow 7 transports away the heat absorbed by the stator cooling ribs 5.
  • the transition to the rotor 2 is closed by the cover 6, which is attached to the electronics housing 12 and has a labyrinth seal-like design in order to minimize pressure loss. Sections of the cover 6 form both a duct wall surface of the cooling duct 10 and an outer lateral surface of the external rotor motor 20.
  • the cooling air flow 7 is sucked in at the suction-side outflow opening 72 in the motor section 22, so that it flows into the inflow opening 71 on the pressure side and through the overall arrangement of the external rotor motor 20 through to the outflow opening 72 flows. Since the cooling air flow 7 is generated exclusively by the pressure difference between the suction side and the pressure side, it is referred to as passive in the present case.
  • FIG 3 an embodiment of the fan 1 is shown in an alternative embodiment as an axial fan in a side view.
  • the to the outrunner 20 off figure 1 The features described are also present here, unless otherwise explained.
  • the fan wheel 25 is fastened to the rotor 2 with its impeller hub completely enclosing the rotor housing 13 .
  • the fan wheel 25 generates not only the main flow but also the pressure difference ⁇ p used for the cooling air flow 7 .
  • the outflow opening 72 is not provided on the rotor housing 13, but rather on the fan wheel 25 or the impeller hub.
  • the cooling air flow 7 runs radially in the motor section 22 between the rotor housing 13 and the impeller hub 17 of the fan wheel 25 so that the cooling channel 10 in the motor section 22 is formed by the rotor housing 13 and the impeller hub of the fan wheel 25 .
  • FIG 4 1 shows an exemplary embodiment of the fan 1 designed as a radial fan, with the cooling channel 10 not being routed along the entire rotor 2, in contrast to the previous examples.
  • the fan wheel 25 of the radial fan has the outflow opening in its impeller base disk 26 72 on.
  • the impeller bottom disk 26 carries the impeller blades 9, which in the present embodiment are curved backwards.
  • the cooling channel 10 therefore runs from the inflow opening 71 in the electronics housing 12 along the cooling ribs 3 to the motor section 22 and there along the stator cooling ribs 5 radially outwards to the outflow opening 72 on the impeller base plate 26.
  • the cooling air flow 7 is then conveyed radially outwards by the fan wheel 25 .
  • the cooling in the electronics section 21 is identical to the previous exemplary embodiments. In the motor section 22, cooling takes place mainly via the stator cooling fins 5.
  • FIG 5 1 shows an inventive design of the fan 1 in a design as a radial fan with the external rotor motor 20, which, as in the previous exemplary embodiments, comprises the motor section 22 and the electronics section 21, which is axially adjacent along the axis of rotation RA, with the motor electronics 11 arranged therein. All of the identical features described in relation to the above statements are not repeated again, but also apply to the exemplary embodiment according to FIG figure 5 .
  • the electronics section can also be aligned radially with respect to the axis of rotation RA.
  • the fan wheel 25 is accommodated radially on the outside on the rotor 2 .
  • the fan 1 generates a pressure difference ⁇ p between its suction side and its pressure side via the fan wheel 25 .
  • the continuous cooling duct 10 runs from the pressure-side inflow opening 71 to the suction-side outflow opening 72 along the stator cooling ribs 5, with the cooling air flow 7 represented by arrows through the cooling duct 10 being generated exclusively passively during operation by the pressure difference ⁇ p generated by the fan wheel 25 becomes.
  • the power module 47 of the motor electronics 11 generates the most heat and is therefore arranged directly adjacent to the stator bushing having the stator cooling fins 5 in order to cool the motor section 22 and the power module 47 of the motor electronics 11 via the stator bushing.
  • FIG 6 is another embodiment of the fan 1 is shown, the structure of that except for the following differences figure 5 is equivalent to.
  • the cooling air flow 7 remains as in the embodiment according to FIG figure 4 outside of the rotor 2.
  • the fan wheel 25 of the fan has the outflow opening 72 in its impeller base disk 26, which carries the backward-curved impeller blades 9.
  • the cooling channel 10 runs radially from the outside along the stator cooling ribs 5 to the outflow opening 72 on the impeller base disk 26.
  • the cooling air flow 7 is then conveyed radially outwards by the fan wheel 25.
  • the fan 1 generates as in the embodiment according to figure 5 via the fan wheel 25 the pressure difference ⁇ p between its suction side and its pressure side.
  • the flow of cooling air 7 represented by arrows is generated through the cooling channel 10 exclusively passively by the pressure difference ⁇ p generated by the fan wheel 25 .
  • the power module 47 of the motor electronics 11 is arranged directly adjacent to the stator bushing having the stator cooling fins 5 in order to cool the motor section 22 and the power module 47 of the motor electronics 11 directly via the stator bushing.
  • the electronics section can also be aligned or positioned radially to the axis of rotation RA instead of axially.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)
EP22152257.6A 2020-01-16 2021-01-12 Ventilateur doté d'un moteur à rotor externe et canal de refroidissement destiné au refroidissement de l'électronique du moteur et des composants d'entraînement du moteur Active EP4006348B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020100865.1A DE102020100865A1 (de) 2020-01-16 2020-01-16 Ventilator mit einem Außenläufermotor und Kühlkanal zur Kühlung der Motorelektronik und von Motorantriebskomponenten
EP21151059.9A EP3851679B1 (fr) 2020-01-16 2021-01-12 Ventilateur doté d'un moteur à rotor externe et canal de refroidissement destiné au refroidissement de l'électronique de moteur et des composants de l'entraînement de moteur

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP21151059.9A Division-Into EP3851679B1 (fr) 2020-01-16 2021-01-12 Ventilateur doté d'un moteur à rotor externe et canal de refroidissement destiné au refroidissement de l'électronique de moteur et des composants de l'entraînement de moteur
EP21151059.9A Division EP3851679B1 (fr) 2020-01-16 2021-01-12 Ventilateur doté d'un moteur à rotor externe et canal de refroidissement destiné au refroidissement de l'électronique de moteur et des composants de l'entraînement de moteur

Publications (2)

Publication Number Publication Date
EP4006348A1 true EP4006348A1 (fr) 2022-06-01
EP4006348B1 EP4006348B1 (fr) 2024-08-07

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ID=74175610

Family Applications (2)

Application Number Title Priority Date Filing Date
EP22152257.6A Active EP4006348B1 (fr) 2020-01-16 2021-01-12 Ventilateur doté d'un moteur à rotor externe et canal de refroidissement destiné au refroidissement de l'électronique du moteur et des composants d'entraînement du moteur
EP21151059.9A Active EP3851679B1 (fr) 2020-01-16 2021-01-12 Ventilateur doté d'un moteur à rotor externe et canal de refroidissement destiné au refroidissement de l'électronique de moteur et des composants de l'entraînement de moteur

Family Applications After (1)

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EP21151059.9A Active EP3851679B1 (fr) 2020-01-16 2021-01-12 Ventilateur doté d'un moteur à rotor externe et canal de refroidissement destiné au refroidissement de l'électronique de moteur et des composants de l'entraînement de moteur

Country Status (4)

Country Link
US (1) US11680584B2 (fr)
EP (2) EP4006348B1 (fr)
CN (1) CN113141089B (fr)
DE (1) DE102020100865A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN119765794B (zh) * 2024-12-17 2025-08-26 安徽致钲电驱动技术有限公司 一种高效散热集成式电机

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CN113141089B (zh) 2024-05-31
EP3851679A1 (fr) 2021-07-21
US20210222704A1 (en) 2021-07-22
EP3851679B1 (fr) 2025-04-09
CN113141089A (zh) 2021-07-20
EP4006348B1 (fr) 2024-08-07
DE102020100865A1 (de) 2021-07-22
US11680584B2 (en) 2023-06-20

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